Handling communication in a wireless communication network
A first network node is configured for handling communication in a wireless communications network. Based on logical channel information configured at the first network node, the first network node determines a version of a buffer status report to use. For example, the version of the buffer status report to use may be determined from among multiple buffer status report versions, where two or more of the multiple buffer status report versions each support multiple logical channel groups, LCGs, e.g., a first version that supports up to 8 LCGs and a second version that supports up to 256 LCGs. Regardless, the first network node transmits the buffer status report of this determined version to a second network node.
1 . A method performed by a first network node for handling communication in a wireless communications network, the method comprising:
based on logical channel information configured at the first network node, determining a version of a buffer status report to use, wherein the logical channel information:
relates to logical channel groups (LCGs) or LCG indices, configured at the first network node;
comprises a highest LCG index configured at the first network node; and/or
is configured at the first radio network node via radio resource control (RRC) signaling; and
transmitting the buffer status report of the determined version to a second network node.
2 . The method of claim 1 , wherein the version of the buffer status report to use is determined from among multiple buffer status report versions, wherein two or more of the multiple buffer status report versions each support multiple logical channel groups (LCGs).
3 . The method of claim 2 , wherein the two or more of the multiple buffer status report versions have different respective numbers of octets for indicating LCG indices.
4 . The method of claim 2 , wherein said determining comprises:
if a highest configured LCG index at the first network node is less than or equal to a first number, determining the version of the buffer status report to use to be a first version; and
if a highest configured LCG index at the first network node is greater than the first number but is less than or equal to a second number, determining the version of the buffer status report to use to be a second version;
wherein the first number is greater than one;
wherein the second number is greater than the first number.
5 . The method of claim 1 , wherein the buffer status report of the determined version indicates, for each of multiple logical channel groups (LGCs) at the first radio network node, a total amount of data available across all logical channels of the logical channel group.
6 . The method of claim 1 , wherein the buffer status report is transmitted as a Medium Access Control (MAC) Control Element (CE), wherein said transmitting comprises transmitting the buffer status report of the determined version to the second network node, with the version of the buffer status report transmitted being determinable by the second network node based on logical channel information configured at the second network node via RRC signaling.
7 . A method performed by a second network node for handling communication in a wireless communications network, the method comprising:
based on logical channel information configured at the second network node, determining a version of a buffer status report to use, wherein the logical channel information:
relates to logical channel groups (LCGs) or LCG indices, configured at the second network node;
comprises a highest LCG index configured at the second network node; and/or
is configured at the second radio network node via radio resource control (RRC) signaling; and
receiving a buffer status report of the determined version from a first network node.
8 . The method of claim 7 , wherein the version of the buffer status report to use is determined from among multiple buffer status report versions, wherein two or more of the multiple buffer status report versions each support multiple logical channel groups (LCGs).
9 . The method of claim 8 , wherein the two or more of the multiple buffer status report versions have different respective numbers of octets for indicating LCG indices.
10 . The method of claim 8 , wherein said determining comprises:
if a highest configured LCG index at the first network node is less than or equal to a first number, determining the version of the buffer status report to use to be a first version; and
if a highest configured LCG index at the first network node is greater than the first number but is less than or equal to a second number, determining the version of the buffer status report to use to be a second version;
wherein the first number is greater than one;
wherein the second number is greater than the first number.
11 . The method of claim 7 , wherein the buffer status report of the determined version indicates, for each of multiple logical channel groups (LGCs) at the first radio network node, a total amount of data available across all logical channels of the logical channel group.
12 . The method of claim 7 , further comprising operating taking information of the buffer status report into account.
13 . The method of claim 7 , wherein the buffer status report is received as a Medium Access Control (MAC) Control Element (CE), and wherein the logical channel information is configured at the second network node via RRC signaling.
14 . A first network node for handling communication in a wireless communications network, the first network node comprising processing circuitry configured to:
based on logical channel information configured at the first network node, determine a version of a buffer status report to use, wherein the logical channel information:
relates to logical channel groups (LCGs) or LCG indices, configured at the first network node;
comprises a highest LCG index configured at the first network node; and/or
is configured at the first radio network node via radio resource control (RRC) signaling; and
transmit the buffer status report of the determined version to a second network node.
15 . The first network node of claim 14 , wherein the version of the buffer status report to use is determined from among multiple buffer status report versions, wherein two or more of the multiple buffer status report versions each support multiple logical channel groups (LCGs).
16 . The first network node of claim 15 , wherein the two or more of the multiple buffer status report versions have different respective numbers of octets for indicating LCG indices.
17 . The first network node of claim 15 , wherein the processing circuitry is configured to:
if a highest configured LCG index at the first network node is less than or equal to a first number, determine the version of the buffer status report to use to be a first version; and
if a highest configured LCG index at the first network node is greater than the first number but is less than or equal to a second number, determine the version of the buffer status report to use to be a second version;
wherein the first number is greater than one;
wherein the second number is greater than the first number.
18 . The first network node of claim 14 , wherein the buffer status report of the determined version indicates, for each of multiple logical channel groups (LGCs) at the first radio network node, a total amount of data available across all logical channels of the logical channel group.
19 . The first network node of claim 14 , wherein the processing circuitry is configured to transmit the buffer status report as a Medium Access Control (MAC) Control Element (CE), and to transmit the buffer status report of the determined version to the second network node, with the version of the buffer status report transmitted being determinable by the second network node based on logical channel information configured at the second network node via RRC signaling.
20 . A second network node for handling communication in a wireless communications network, the second network node comprising processing circuitry configured to:
based on logical channel information configured at the second network node, determine a version of a buffer status report to use, wherein the logical channel information:
relates to logical channel groups (LCGs) or LCG indices, configured at the second network node;
comprises a highest LCG index configured at the second network node; and/or
is configured at the second radio network node via radio resource control (RRC) signaling; and
receive a buffer status report of the determined version from a first network node.
21 . The second network node of claim 20 , wherein the processing circuitry is configured to receive the buffer status report as a Medium Access Control (MAC) Control Element (CE), and wherein the logical channel information is configured at the second network node via RRC signaling.